diff --git a/daemon/src/audio/audiobuffer.h b/daemon/src/audio/audiobuffer.h
index e14886a4420f72c0ff9883170b243b968164fe02..45b96b37aee9a5836a169d2c23f259059e1a1a23 100644
--- a/daemon/src/audio/audiobuffer.h
+++ b/daemon/src/audio/audiobuffer.h
@@ -187,7 +187,10 @@ class AudioBuffer {
         }
 
         /**
-         * Resize the buffer to make it able to hold sample_num multichannel samples.
+         * Resize the buffer to make it able to hold sample_num
+         * multichannel samples.
+         * If the requested size is larger than the current buffer size,
+         * the new samples are set to zero.
          */
         void resize(size_t sample_num);